/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:29:43,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:29:43,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:29:43,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:29:43,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:29:43,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:29:43,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:29:43,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:29:43,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:29:43,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:29:43,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:29:43,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:29:43,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:29:43,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:29:43,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:29:43,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:29:43,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:29:43,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:29:43,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:29:43,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:29:43,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:29:43,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:29:43,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:29:43,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:29:43,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:29:43,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:29:43,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:29:43,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:29:43,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:29:43,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:29:43,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:29:43,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:29:43,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:29:43,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:29:43,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:29:43,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:29:43,395 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:29:43,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:29:43,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:29:43,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:29:43,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:29:43,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:29:43,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:29:43,396 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:29:43,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:29:43,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:29:43,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:29:43,871 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:29:43,872 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:29:43,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2021-02-24 00:29:43,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8e9a1e2/6e9bb66fbe5040c8a443e5b2190c54eb/FLAG3c0ed27bb [2021-02-24 00:29:44,834 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:29:44,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2021-02-24 00:29:44,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8e9a1e2/6e9bb66fbe5040c8a443e5b2190c54eb/FLAG3c0ed27bb [2021-02-24 00:29:45,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f8e9a1e2/6e9bb66fbe5040c8a443e5b2190c54eb [2021-02-24 00:29:45,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:29:45,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:29:45,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:29:45,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:29:45,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:29:45,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e34da3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45, skipping insertion in model container [2021-02-24 00:29:45,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:29:45,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:29:45,572 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c[11342,11355] [2021-02-24 00:29:45,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:29:45,593 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:29:45,682 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c[11342,11355] [2021-02-24 00:29:45,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:29:45,718 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:29:45,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45 WrapperNode [2021-02-24 00:29:45,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:29:45,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:29:45,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:29:45,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:29:45,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... [2021-02-24 00:29:45,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:29:45,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:29:45,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:29:45,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:29:45,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:29:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:29:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:29:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:29:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:29:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2021-02-24 00:29:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2021-02-24 00:29:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2021-02-24 00:29:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2021-02-24 00:29:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2021-02-24 00:29:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2021-02-24 00:29:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2021-02-24 00:29:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2021-02-24 00:29:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:29:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:29:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:29:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:29:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:29:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:29:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:29:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2021-02-24 00:29:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-02-24 00:29:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-02-24 00:29:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2021-02-24 00:29:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2021-02-24 00:29:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2021-02-24 00:29:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2021-02-24 00:29:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:29:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2021-02-24 00:29:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2021-02-24 00:29:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-02-24 00:29:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:29:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:29:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 00:29:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:29:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:29:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:29:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:29:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:29:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 00:29:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:29:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-24 00:29:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:29:47,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:29:47,746 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-02-24 00:29:47,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:47 BoogieIcfgContainer [2021-02-24 00:29:47,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:29:47,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:29:47,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:29:47,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:29:47,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:29:45" (1/3) ... [2021-02-24 00:29:47,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b251b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:29:47, skipping insertion in model container [2021-02-24 00:29:47,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:29:45" (2/3) ... [2021-02-24 00:29:47,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b251b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:29:47, skipping insertion in model container [2021-02-24 00:29:47,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:29:47" (3/3) ... [2021-02-24 00:29:47,760 INFO L111 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2021-02-24 00:29:47,767 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:29:47,774 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:29:47,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:29:47,817 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:29:47,817 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:29:47,817 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:29:47,817 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:29:47,817 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:29:47,818 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:29:47,818 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:29:47,818 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:29:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states. [2021-02-24 00:29:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-02-24 00:29:47,880 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:29:47,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:29:47,882 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:29:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:29:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1518908336, now seen corresponding path program 1 times [2021-02-24 00:29:47,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:29:47,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021790216] [2021-02-24 00:29:47,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:29:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:29:48,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:29:48,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:29:48,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:29:48,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:29:48,705 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-02-24 00:29:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:29:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:29:48,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:29:48,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:29:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 00:29:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:29:48,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:29:48,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:29:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-24 00:29:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:29:49,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:29:49,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:29:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:29:49,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021790216] [2021-02-24 00:29:49,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:29:49,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:29:49,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737834765] [2021-02-24 00:29:49,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:29:49,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:29:49,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:29:49,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:29:49,098 INFO L87 Difference]: Start difference. First operand 510 states. Second operand 4 states. [2021-02-24 00:29:49,348 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-02-24 00:29:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:29:50,853 INFO L93 Difference]: Finished difference Result 887 states and 1007 transitions. [2021-02-24 00:29:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:29:50,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2021-02-24 00:29:50,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:29:50,877 INFO L225 Difference]: With dead ends: 887 [2021-02-24 00:29:50,878 INFO L226 Difference]: Without dead ends: 495 [2021-02-24 00:29:50,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:29:50,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-02-24 00:29:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2021-02-24 00:29:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2021-02-24 00:29:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 541 transitions. [2021-02-24 00:29:51,142 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 541 transitions. Word has length 178 [2021-02-24 00:29:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:29:51,143 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 541 transitions. [2021-02-24 00:29:51,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:29:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 541 transitions. [2021-02-24 00:29:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-02-24 00:29:51,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:29:51,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:29:51,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:29:51,154 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:29:51,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:29:51,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2112499751, now seen corresponding path program 1 times [2021-02-24 00:29:51,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:29:51,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942728625] [2021-02-24 00:29:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:29:51,284 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:29:51,284 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:29:51,285 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:29:51,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:29:51,323 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:29:51,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:29:51 BoogieIcfgContainer [2021-02-24 00:29:51,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:29:51,327 INFO L168 Benchmark]: Toolchain (without parser) took 6231.03 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 125.5 MB in the beginning and 117.3 MB in the end (delta: 8.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:29:51,327 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:29:51,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 612.37 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 106.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:29:51,330 INFO L168 Benchmark]: Boogie Preprocessor took 137.89 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 103.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:29:51,331 INFO L168 Benchmark]: RCFGBuilder took 1887.16 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.0 MB in the beginning and 130.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:29:51,332 INFO L168 Benchmark]: TraceAbstraction took 3572.46 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 129.4 MB in the beginning and 117.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:29:51,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 612.37 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 106.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 137.89 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 103.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1887.16 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 103.0 MB in the beginning and 130.0 MB in the end (delta: -27.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3572.46 ms. Allocated memory was 181.4 MB in the beginning and 218.1 MB in the end (delta: 36.7 MB). Free memory was 129.4 MB in the beginning and 117.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 463]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L181] unsigned int Id_MCDC_104; [L182] UINT16 Id_MCDC_105; [L183] UINT16 Id_MCDC_106; [L184] Od_IndexTable* Id_MCDC_107; [L185] Od_IndexTable* Id_MCDC_108; [L186] Od_IndexTable* Id_MCDC_109; [L187] Od_IndexTable* Id_MCDC_110; [L188] Od_IndexTable* Id_MCDC_111; [L189] UINT32 Id_MCDC_112 [4]; [L190] CanOpenNode Id_MCDC_113; [L191] UINT32 Id_MCDC_114=0; [L429] void * Id_MCDC_143; [L430] void * Id_MCDC_144; [L431] void * Id_MCDC_145; [L432] void * Id_MCDC_146; [L433] void * Id_MCDC_147; [L434] void * Id_MCDC_148; [L435] int Id_MCDC_149; [L436] int Id_MCDC_150; [L437] int Id_MCDC_151; [L438] int Id_MCDC_152; [L439] int Id_MCDC_153; [L440] int Id_MCDC_154; [L441] int Id_MCDC_155; [L442] short Id_MCDC_156; [L443] short Id_MCDC_157; [L444] FILE* Id_MCDC_158; [L445] unsigned short Id_MCDC_159; [L446] unsigned short Id_MCDC_160; [L447] unsigned short Id_MCDC_161=0; [L448] unsigned short Id_MCDC_162=0; [L449] char Id_MCDC_163; [L450] char Id_MCDC_164; [L451] Id_MCDC_158 = fopen("in.eds", "r") [L452] COND FALSE !(Id_MCDC_158 == (( void * ) 0)) [L457] CALL Id_MCDC_100() [L422] int Id_MCDC_141; [L423] void * Id_MCDC_142; [L424] CALL Id_MCDC_99() [L402] CHAR Id_MCDC_139 [4]={0, 0, 0, 0}; [L403] UINT32 Id_MCDC_140=0; [L404] Id_MCDC_113.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372) [L405] CALL Id_MCDC_97() [L333] UINT32 Id_MCDC_123; [L334] UINT32 Id_MCDC_124; [L335] UINT32 Id_MCDC_125; [L336] UINT32 Id_MCDC_126; [L337] UINT32 Id_MCDC_127; [L338] UINT32 Id_MCDC_128=0x00; [L339] UINT16 Id_MCDC_129; [L340] UINT32 Id_MCDC_130=0x00; [L341] UINT32 Id_MCDC_131=0x00; [L342] UINT8 Id_MCDC_35=0; [L343] UINT8 Id_MCDC_132=0; [L344] UINT8 Id_MCDC_36=0; [L345] UINT8 Id_MCDC_133=0; [L346] UINT8 Id_MCDC_134=0x00; [L347] INT32 Id_MCDC_135; [L348] void * Id_MCDC_136; [L349] UINT32* Id_MCDC_137; [L350] UINT16 Id_MCDC_138; [L351] Id_MCDC_123 = 0x1800 [L352] Id_MCDC_132 = 0 [L352] COND FALSE !(Id_MCDC_132 < 4) [L356] COND FALSE !(Id_MCDC_123 <= 0x1803) [L398] return 0x00; [L338] UINT32 Id_MCDC_128=0x00; [L398] return 0x00; [L340] UINT32 Id_MCDC_130=0x00; [L398] return 0x00; [L341] UINT32 Id_MCDC_131=0x00; [L398] return 0x00; [L398] return 0x00; [L398] return 0x00; [L405] RET Id_MCDC_97() [L406] Id_MCDC_140 = 0 [L406] COND FALSE !(Id_MCDC_140 < 4) [L417] CALL Id_MCDC_95(4, Id_MCDC_139) [L282] UINT32 Id_MCDC_121=0; [L283] UINT32 Id_MCDC_122=0; [L284] COND FALSE !(Id_MCDC_93 < 2) [L288] COND FALSE !(Id_MCDC_93 != 2) [L294] EXPR Id_MCDC_94[1] [L294] Id_MCDC_122 = Id_MCDC_94[1] [L296] EXPR Id_MCDC_94[0] [L296] CALL Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L251] UINT32 Id_MCDC_117=0; [L252] UINT32 Id_MCDC_118=0; [L253] UINT32 Id_MCDC_119=1; [L254] UINT32 Id_MCDC_120=0; [L255] COND TRUE Id_MCDC_90 > Id_MCDC_91 [L257] Id_MCDC_117 = Id_MCDC_90 [L258] Id_MCDC_118 = Id_MCDC_91 [L270] COND TRUE Id_MCDC_119 != 0 [L272] CALL avoid_zero(Id_MCDC_118 != 0) [L11] COND FALSE !(!y) [L272] RET avoid_zero(Id_MCDC_118 != 0) [L273] Id_MCDC_120 = ( UINT32 ) (Id_MCDC_117 / Id_MCDC_118) [L274] CALL __VERIFIER_assert(( long long ) (Id_MCDC_117 - (Id_MCDC_120 * Id_MCDC_118)) >= 0 && ( long long ) (Id_MCDC_117 - (Id_MCDC_120 * Id_MCDC_118)) <= 4294967295) [L461] COND TRUE ! (Id_MCDC_103) [L463] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 518 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 3.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 518 SDtfs, 529 SDslu, 143 SDs, 0 SdLazy, 438 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=510occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 56286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...